Sir,Which would you advise me to opt for; aerospace at iitb or mechanical at bhu?

What is the procedure for upgradation of branches at IIT. I am OBC and getting 181.

You should opt for Aerospace at IIT B. IIT B is much better than BHU anyday.. You would get great exposure there.. Aerospace engg. is also decent..Upgradation of branches is very very difficult. You have to be in top 10-15 of your batch at the end of year to upgrade. CGPA should be greater than 9.7.THanks